Roller shaft fixing device and conveying device

Abstract

The present invention provides a roller shaft fixing device and a conveying device that can fix the roller shaft while simplifying the mechanism for fixing the roller shaft. [Solution] The roller shaft fixing device comprises a shaft holder having a first hole wall that forms a hole through which a roller shaft protruding from the roller and penetrating the frame is inserted, and which is fixed to the frame while holding the roller shaft inserted in the hole; a first plate having a second hole wall located on the opposite side of the shaft holder from the frame side and forming a hole through which a roller shaft penetrating the shaft holder is inserted, and which is fixed to the shaft holder with the roller shaft inserted; and a plurality of elastic members provided on the shaft holder, arranged apart from each other in the circumferential direction of the roller shaft so as to surround the first hole wall, and extending from the periphery of the first hole wall toward the second hole wall, wherein the second hole wall presses the surfaces of each of the plurality of elastic members opposite to the roller shaft side toward the axial center of the roller shaft.

Description

Technical Field

[0001] The present invention relates to a roller shaft fixture and a conveying device.

Background Art

[0002] Patent Document 1 discloses a roller shaft fixture that does not generate unnecessary forces associated with attachment on the roller shaft when the roller shaft is fixed to the conveyor frame even when the conveyor frame is inclined. When the slit extending to the end formed in the roller shaft fixing member is closed, the spherical concave portion of the pressing member is pushed into the spherical convex portion formed in the screw hole portion of the roller shaft fixing member, thereby holding the roller shaft.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the prior art disclosed in Patent Application 1 has a slit, a spherical convex portion, etc. in order to position the roller in the axial direction and prevent the roller shaft from rotating, so the structure becomes complicated. In particular, in order to ensure that the slit can firmly sandwich the roller shaft, high machining accuracy is required for the shape of the spherical surface portion.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a roller shaft fixture and a conveying device that can simplify the mechanism for fixing the roller shaft while being able to fix the roller shaft.

Means for Solving the Problems

[0006] To achieve the above objective, the roller shaft fixing device of the present disclosure comprises: a shaft holder having a first hole wall that forms a hole through which a roller shaft protruding from a roller and penetrating a frame is inserted, and which is fixed to the frame while holding the roller shaft inserted in the hole; a first plate having a second hole wall located on the opposite side of the shaft holder from the frame side and forming a hole through which the roller shaft penetrating the shaft holder is inserted, and which is fixed to the shaft holder with the roller shaft inserted; and a plurality of elastic members provided on the shaft holder, arranged apart from each other in the circumferential direction of the roller shaft so as to surround the first hole wall, and extending from the periphery of the first hole wall toward the second hole wall, wherein the second hole wall presses the opposite side of each of the plurality of elastic members toward the axial center of the roller shaft.

[0007] The roller shaft fixing device of the present disclosure further comprises a second plate having a fitting portion that fits into a groove formed on the outer circumferential surface of the roller shaft, and the wall surface forming the fitting portion is fixed to the frame in a state in which it fits into the groove.

[0008] In the roller shaft fixing device of this disclosure, the shaft holder is gripped by the first plate and the second plate by a fastening member inserted from the first plate toward the frame.

[0009] The roller shaft fixing device of this disclosure has a polygonal outer surface of the roller shaft and the wall of the second hole.

[0010] The roller shaft fixing device of this disclosure has a polygonal outer surface of the roller shaft and the wall of the first hole.

[0011] The conveying device of this disclosure comprises the roller shaft fixing device described above, a set of frames, a plurality of rollers, and a belt connecting adjacent rollers among the plurality of rollers.

[0012] According to this disclosure, the mechanism for fixing the roller shaft can be simplified while still allowing the roller shaft to be fixed. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is an external view of the transport device 100 according to an embodiment of the present disclosure. [Figure 2] Figure 2 is an external view of the transport device 100 according to an embodiment of the present disclosure. [Figure 3] Figure 3 is an external view of the rotary roller 20_1. [Figure 4] Figure 4 is an exploded view of the roller shaft fixture 30. [Figure 5] Figure 5 is a perspective view of the second plate 31. [Figure 6] Figure 6 is a perspective view of the shaft holder 32. [Figure 7] Figure 7 is a perspective view of the first plate 33. [Figure 8] Figure 8 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 9] Figure 9 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 10] Figure 10 is a diagram for explaining the assembly procedure of the transport device 100. <000007 [Figure 11] Figure 11 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 12] Figure 12 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 13] Figure 13 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 14] Figure 14 is a diagram for explaining the assembly procedure of the transport device 100. [Figure 15] Figure 15 is a diagram for explaining the assembly procedure of the transport device 100.

Mode for Carrying Out the Invention

[0014] Hereinafter, an embodiment of the present invention will be described. In each drawing, the same or corresponding components are denoted by the same reference numerals, and the description thereof may be omitted. In each drawing, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other, the X-axis direction and the Y-axis direction are horizontal directions, and the Z-axis direction is a vertical direction.

[0015] (First Embodiment) FIG. 1 and FIG. 2 are external views of a transport device 100 according to an embodiment of the present disclosure. The transport device 100 may include, for example, a set of frames 10 arranged at a predetermined distance in the X-axis direction and each extending in the Y-axis direction, a plurality of rollers 20 arranged between the set of frames 10, a roller shaft fixture 30, and a cover 40. FIG. 1 shows the transport device 100 with the cover 40 attached to the roller shaft fixture 30, and FIG. 2 shows the transport device 100 with the cover 40 removed from the roller shaft fixture 30.

[0016] The frame 10 may be interpreted as a conveyor frame. For example, five rollers 20 may be provided on a set of frames 10. These rollers 20 are each cylindrical rotating bodies extending in the X-axis direction and may be arranged at a predetermined distance from each other in the Y-axis direction. Adjacent rollers 20 are connected by a belt 50. Among the five rollers 20, for example, the roller 20 located at the center in the Y-axis direction may be interpreted as a rotating roller 20_1 incorporating a motor. Among the five rollers 20, the remaining rollers 20 except the rotating roller 20_1 may be interpreted as rotated rollers 20_2 that rotate in the same rotation direction as the rotating roller 20_1 by being directly or indirectly connected to the rotating roller 20_1 via the belt 50.

[0017] The roller shaft fixture 30 may be interpreted as a structure for fixing the roller shaft 21 of the rotating roller 20_1 supported by the frame 10 to the frame 10 while positioning the rotating roller 20_1 in the X-axis direction.

[0018] The roller shaft fixture 30 may be provided on the end face in the X-axis direction of one of the set of frames 10, specifically, the end face on the side opposite to the roller 20 side of the frame 10.

[0019] The roller shaft fixing device 30 may be equipped with a circuit board for controlling the rotation of the rotating roller 20_1, and the cover 40 may be fixed to the roller shaft fixing device 30 by, for example, a fastening member 41 to protect the circuit board. Details of the configuration of the roller shaft fixing device 30 will be described later.

[0020] Figure 3 is an external view of the rotating roller 20_1. A roller shaft 21 may be provided at the end of the rotating roller 20_1 in the positive X-axis direction. The roller shaft 21 may have a groove 21a formed on its outer circumferential surface into which the fitting portion 31a of the second plate 31, described later, fits, and the wall surface 31a1 of the fitting portion 31a contacts the bottom surface 21a1 of the groove 21a. This holds the roller shaft 21 to the second plate 31 and suppresses the oscillation of the roller shaft 21 in the X-axis direction.

[0021] A roller shaft 21_1 may be provided at the end of the rotating roller 20_1 in the negative X-axis direction. The roller shaft 21_1 is pushed out in the negative X-axis direction by the biasing force of a spring mechanism (not shown) built into the rotating roller 20_1. By pushing the roller shaft 21_1 in the positive X-axis direction, a part of the roller shaft 21_1 enters the interior of the rotating roller 20_1, and when the force pushing the roller shaft 21_1 is released, the roller shaft 21_1 is pushed out by the biasing force of the spring mechanism (not shown).

[0022] For example, even in a situation where the set of frames 10 shown in Figure 1 are fixed to a base in the factory and their width in the X-axis direction cannot be increased, the rotating roller 20_1 can be inserted between the set of frames 10 while pressing the roller shaft 21_1.

[0023] The end of the rotating roller 20_1 in the negative X-axis direction may be provided with a belt guide 22, which is a plurality of grooves that guide the belt 50 in the Y-axis direction while restricting the movement of the belt 50 in the X-axis direction as shown in Figure 1.

[0024] Next, the configuration of the roller shaft fixing device 30 will be explained with reference to Figures 4 to 7. Figure 4 is an exploded view of the roller shaft fixing device 30, Figure 5 is a perspective view of the second plate 31, Figure 6 is a perspective view of the shaft holder 32, and Figure 7 is a perspective view of the first plate 33.

[0025] As shown in Figure 4, the roller shaft fixing device 30 may include a second plate 31, a shaft holder 32, a first plate 33, a fastening member 34, and a fastening member 35.

[0026] The second plate 31, the shaft holder 32, and the first plate 33 may be arranged in the order of second plate 31, shaft holder 32, and first plate 33, from the end face of the frame 10 in the positive X-axis direction toward the positive X-axis direction.

[0027] The second plate 31 is attached to the frame 10. For example, the second plate 31 can be attached to the end face of the frame 10 in the positive X-axis direction by sliding the second plate 31 in the Z-axis direction so that the fitting portion 31a (see Figure 5) of the second plate 31 fits into the groove 21a of the roller shaft 21. The second plate 31 attached to the frame 10 may be fixed to the frame 10 by fastening members 34. For example, the frame 10 has two holes 10a that penetrate in the X-axis direction, and the second plate 31 has two holes 31d (see Figure 5). The fastening members 34 are inserted into the two holes 31d of the second plate 31 and the two holes 10a of the frame 10 in that order, and nuts 34a are attached to the ends of the fastening members 34, thereby fixing the second plate 31 to the end face of the frame 10 in the positive X-axis direction.

[0028] The shaft holder 32 and the first plate 33 may be fixed to the second plate 31 by fastening members 35. For example, the second plate 31 has two holes 31b (see Figure 5), the shaft holder 32 has two holes 32a (see Figure 6), and the first plate 33 has two holes 33a (see Figure 7). The fastening members 35 are inserted into the two holes 33a of the first plate 33, the two holes 32a of the shaft holder 32, and the two holes 31b of the second plate 31 in that order, and their tips are screwed into the second plate 31, thereby indirectly fixing the shaft holder 32 to the end face of the second plate 31 in the positive X direction, and fixing the first plate 33 to the end face of the shaft holder 32 in the positive X direction.

[0029] As shown in Figure 5, the second plate 31 may include a metal base 31_1, a fitting portion 31a, two holes 31b, two holes 31c, two holes 31d, and two holes 31e. The second plate 31 may be interpreted as a base plate.

[0030] The material of the base 31_1 is, for example, SPHC (hot-rolled mild steel sheet), which is inexpensive, readily available, easy to process, and particularly suitable for bending. However, the material of the base 31_1 is not limited to SPHC; it may also be SPCC (cold-rolled steel sheet), a resin with high mechanical strength, or other materials.

[0031] A fitting portion 31a may be formed on the end face 31A of the base portion 31_1 in the positive Z-axis direction. The fitting portion 31a may be fitted into a groove 21a formed on the outer circumferential surface of the roller shaft 21 (see Figure 4). The base portion 31_1 of the second plate 31 is fixed to the frame 10 (see Figure 4) with the wall surface 31a1 forming the fitting portion 31a fitted into the groove 21a of the roller shaft 21. Specifically, a fitting portion 31a may be formed on the end face 31A of the base portion 31_1, with a wall surface 31a1 having a U-shaped shape when viewed in plan with the plane including the YZ axis.

[0032] Two holes 31b may be formed near the end face 31A in the positive Z-axis direction of the base portion 31_1. The two holes 31b may be arranged adjacent to the wall surface 31a1 that forms the fitting portion 31a, and spaced a predetermined distance apart in the Y-axis direction. The fitting portion 31a may be provided between the two holes 31b.

[0033] Two holes 31d may be formed near the end face 31B of the base portion 31_1 in the negative Z-axis direction. The two holes 31b may be arranged at a predetermined distance apart in the Y-axis direction. The fastening members 34 shown in Figure 4 are inserted into the two holes 31d.

[0034] Two holes 31c and two holes 31e may be formed near the center of the base portion 31_1 in the Z-axis direction. The two holes 31c may be arranged at a predetermined distance apart in the Y-axis direction. Similarly, the two holes 31e may be arranged at a predetermined distance apart in the Y-axis direction. The two holes 31c may be interpreted as holes into which the fastening member 41 shown in Figure 4 is inserted, and the two holes 31e may be interpreted as holes for fixing the aforementioned circuit board to the second plate 31 with a fastening member not shown.

[0035] As shown in Figure 6, the shaft holder 32 may include a resin base 32_1, two holes 32a, a plurality of elastic members 32b, and a hole 32c. The shaft holder 32 may be interpreted as a shaft holder and may be indirectly fixed to the frame 10 while holding the roller shaft 21 (see Figure 4) inserted into the hole 32c.

[0036] The material of the base 32_1 is, for example, PP (polypropylene), which has high mechanical strength and is resistant to repeated bending. However, the material of the base 32_1 is not limited to PP; for example, any resin with high mechanical strength, such as ABS (acrylonitrile butadiene styrene), PC (polycarbonate), PPS (polyphenylene sulfide), or PEEK (polyether ether ketone), may also be used.

[0037] Two holes 32a may be formed near both end faces of the base portion 32_1 in the Y-axis direction. The two holes 32a may be arranged adjacent to the first hole wall 32c1 that forms hole 32c, and spaced a predetermined distance apart in the Y-axis direction. Hole 32c may be provided between the two holes 32a.

[0038] The fastening members 35 shown in Figure 4 are inserted into the two holes 32a. The holes 32c are formed near the center of the base portion 32_1 in the Z-axis and Y-axis directions, respectively, and can be interpreted as through holes through which the roller shaft 21, which protrudes from the rotating roller 20_1 shown in Figure 3 and penetrates the frame 10, is inserted.

[0039] Multiple elastic members 32b may be arranged apart from each other in the circumferential direction of the roller shaft 21 shown in Figure 3 so as to surround the first hole wall 32c1. Each of the multiple elastic members 32b extends from around the first hole wall 32c1 toward the second hole wall 33b1 formed in the base 33_1 of the first plate 33 shown in Figure 7.

[0040] Each of the multiple elastic members 32b can be interpreted as a wing-shaped member that bends when its outer surface, that is, the surface opposite to the hole 32c side of the elastic member 32b, is pressed by the first plate 33 shown in Figure 7, and allows such bending within the elastic deformation range of the elastic member 32b.

[0041] The base 32_1 of the shaft holder 32 may be gripped by the first plate 33 shown in Figure 7 and the second plate 31 shown in Figure 5 by a fastening member 35 inserted from the first plate 33 toward the frame 10 (see Figure 4). This allows the force tightening the fastening member 35 to be converted into a force pressing each of the multiple elastic members 32b toward the axial center of the roller shaft 21.

[0042] As shown in Figure 7, the first plate 33 may include a metal base 33_1 and two holes 33a and hole 33b. The first plate 33 may be interpreted as an end plate.

[0043] The material of the base 33_1 is, for example, SPCC, which has high machinability. However, the material of the base 33_1 is not limited to SPCC; it may also be SPHC, a resin with high mechanical strength, etc. The base 33_1 may be fixed to the shaft holder 32 with the roller shaft 21 shown in Figure 4 inserted.

[0044] The two holes 33a may be arranged adjacent to the second hole wall 33b1 that forms hole 33b, separated by a predetermined distance in the Y-axis direction. Hole 33b may be provided between the two holes 33a.

[0045] The fastening members 35 shown in Figure 4 are inserted into the two holes 33a. The holes 33b are formed near the center of the base portion 33_1 in the Z-axis and Y-axis directions, respectively, and can be interpreted as through holes through which the roller shaft 21 that penetrates the frame 10 shown in Figure 3 and the multiple elastic members 32b shown in Figure 6 are inserted.

[0046] The second hole wall 33b1 is located on the opposite side of the shaft holder 32 shown in Figure 6 from the frame 10 side (see Figure 4), and may form a hole 33b through which the roller shaft 21 (see Figure 4), which penetrates the shaft holder 32, is inserted. The second hole wall 33b1 may press the surfaces of each of the multiple elastic members 32b shown in Figure 6, on the side opposite to the roller shaft 21 side (see Figure 4), toward the axial center of the roller shaft 21.

[0047] Furthermore, the shape of the second hole wall 33b1 when viewed from above with respect to the YZ axis may be polygonal (for example, hexagonal), and similarly, the shape of the roller shaft 21 when viewed from above with respect to the YZ axis may also be polygonal (for example, hexagonal). By making the outer surfaces of the second hole wall 33b1 and the roller shaft 21 polygonal in this way, the outer surface of the roller shaft 21 catches on the second hole wall 33b1, making it possible to more firmly prevent the rotation of the roller shaft 21.

[0048] Furthermore, the first hole wall 32c1 may have a polygonal shape (for example, a hexagon) when viewed from above with respect to the YZ axis, and similarly, the roller shaft 21 may have a polygonal shape (for example, a hexagon) when viewed from above with respect to the YZ axis. By making the outer surfaces of the first hole wall 32c1 and the roller shaft 21 polygonal in this way, the outer surface of the roller shaft 21 catches on the first hole wall 32c1, making it possible to more firmly prevent the rotation of the roller shaft 21.

[0049] Next, the assembly procedure for the conveying device 100 will be explained with reference to Figures 8 to 15. Figures 8 to 15 are diagrams illustrating the assembly procedure for the conveying device 100. Here, the procedure for assembling the rotating rollers 20_1 to a set of frames 10 and the assembly procedure for the roller shaft fixing device 30 that fixes the roller shafts 21 of the rotating rollers 20_1 assembled to the set of frames 10 in a non-rotatable state will be explained.

[0050] Figure 8 shows the rotating roller 20_1 before it is assembled to a set of frames 10. Note that the belt 50 shown in Figure 1 is omitted in Figure 8, but the belt 50 may be placed over the rotating roller 20_1 before assembling the rotating roller 20_1 to a set of frames 10.

[0051] When assembling the rotating roller 20_1 to a pair of frames 10, first the roller shaft 21_1 of the rotating roller 20_1 is pushed in the positive X-axis direction. This causes a portion of the roller shaft 21_1 to enter the interior of the rotating roller 20_1. In this state, the rotating roller 20_1 is tilted and the roller shaft 21 is inserted into the hole 10b of one of the frames 10.

[0052] Subsequently, the rotating roller 20_1 is positioned horizontally between the two frames 10, and the tip of the roller shaft 21_1 is aligned with the hole 10b of the other frame 10. When the axial center of the roller shaft 21_1 coincides with the center of the hole 10b of the other frame 10, the roller shaft 21_1 is pushed out by the biasing force of a spring mechanism (not shown), and the roller shaft 21_1 is inserted into the hole 10b of the frame 10. In this way, the rotating roller 20_1 is supported by a pair of frames 10. Here, the rotating roller 20_1 is rotatably supported.

[0053] Next, as shown in Figure 9, the second plate 31 is attached to the frame 10. Specifically, the second plate 31 is attached to the frame 10 by sliding the second plate 31 in the Z-axis direction so that the fitting portion 31a of the second plate 31 fits into the groove 21a of the roller shaft 21.

[0054] Next, as shown in Figure 10, the fastening member 34 is inserted into the two holes 31d of the second plate 31 and the two holes 10a of the frame 10, and a nut 34a is attached to its tip, thereby fixing the second plate 31 to the frame 10.

[0055] Next, as shown in Figure 11, the shaft holder 32 is attached to the second plate 31, and then, as shown in Figure 12, the first plate 33 is attached to the shaft holder 32.

[0056] At this time, the multiple elastic members 32b of the shaft holder 32 are pressed against the second hole wall 33b1 of the first plate 33, causing them to bend toward the axial center of the roller shaft 21. As a result, the elastic members 32b come into contact with the outer circumferential surface of the roller shaft 21, and the roller shaft 21 is restrained by the multiple elastic members 32b. In this state, as shown in Figure 13, the fastening member 35 is inserted into the two holes 33a of the first plate 33, and its tip is screwed into the second plate 31, thereby fixing the shaft holder 32 to the second plate 31 as shown in Figure 14. The first plate 33 is also fixed to the shaft holder 32. When the fastening member 35 is tightened, the gap between the first plate 33 and the shaft holder 32 narrows, causing the multiple elastic members 32b to bend further toward the axial center of the roller shaft 21, so that the roller shaft 21 is firmly held by the multiple elastic members 32b.

[0057] Figure 15 is a cross-sectional view of the roller shaft fixing device 30, taken in a plane parallel to the XZ axis including the roller shaft 21 shown in Figure 14. Following the assembly procedure up to Figure 14, as shown in Figure 15, the second hole wall 33b1 presses the surfaces of each of the multiple elastic members 32b that are opposite to the roller shaft 21 toward the axial center of the roller shaft 21. As a result, the roller shaft 21 is indirectly fixed to the frame 10 via the second plate 31 and the shaft holder 32, thereby preventing rotation of the roller shaft 21 and suppressing its movement in the axial direction (X-axis direction).

[0058] In this disclosure, an example configuration of the roller shaft fixing device 30 including the shaft holder 32, the first plate 33, and the second plate 31 has been described. However, by utilizing at least the shaft holder 32 and the first plate 33, the roller shaft fixing device 30 can prevent the rotation of the roller shaft 21 by utilizing the deflection of the multiple elastic members 32b. In other words, the roller shaft fixing device 30 may be configured to directly fix the shaft holder 32 to the frame 10, excluding the second plate 31. However, by utilizing the second plate 31, even if the shaft holder 32 is indirectly fixed to the frame 10, the fitting portion 31a can more firmly restrict the axial movement of the roller shaft 21, and the cover 40 can be attached to the frame 10 without drilling holes in the frame 10.

[0059] As described above, the roller shaft fixing device 30 of this disclosure comprises a shaft holder 32 having a plurality of elastic members 32b surrounding the roller shaft 21, and a first plate 33 that presses each of the plurality of elastic members 32b toward the axial center of the roller shaft 21.

[0060] This allows the rotation of the roller shaft 21 to be prevented by utilizing the deflection of multiple elastic members 32b without increasing the processing precision during manufacturing. As a result, the mechanism for fixing the roller shaft 21 can be simplified while still fixing the roller shaft 21. Furthermore, since the roller shaft 21 can be pressed from several points in its circumferential direction, uneven loading on the roller shaft 21 can be prevented. In addition, by fixing the shaft holder 32 and the first plate 33 to the second plate 31, the rotation of the roller shaft 21 can be suppressed once its axial position is determined.

[0061] <Note> The features of this invention are as follows.

[0062] (Note 1) A shaft holder is fixed to the frame while holding the roller shaft inserted into the hole, and has a first hole wall that forms a hole through which a roller shaft protruding from the roller and penetrating the frame is inserted, A first plate is fixed to the shaft holder with the roller shaft inserted, and is located on the opposite side of the shaft holder from the frame side, and has a second hole wall that forms a hole through which the roller shaft, which penetrates the shaft holder, is inserted. A plurality of elastic members are provided on the shaft holder, arranged apart from each other in the circumferential direction of the roller shaft so as to surround the first hole wall, and extending from the periphery of the first hole wall toward the second hole wall, Equipped with, The second hole wall presses the surfaces of each of the plurality of elastic members opposite to the roller shaft side toward the axial center of the roller shaft, in a roller shaft fixing device. (Note 2) The roller shaft fixing device according to Appendix 1, further comprising a second plate having a fitting portion that fits into a groove formed on the outer circumferential surface of the roller shaft, the second plate being fixed to the frame with the wall surface forming the fitting portion fitted into the groove. (Note 3) The roller shaft fixing device as described in Appendix 2, wherein the shaft holder is gripped by the first plate and the second plate by a fastening member inserted from the first plate toward the frame. (Note 4) The roller shaft fixing device as described in Appendix 1, wherein the outer surface of the roller shaft and the wall of the second hole are polygonal. (Note 5) The roller shaft fixing device as described in Appendix 1, wherein the outer surface of the roller shaft and the wall of the first hole are polygonal. (Note 6) A roller shaft fixing device as described in any one of the appendices 1 to 5, A set of the aforementioned frames, Multiple rollers, A belt connecting adjacent rollers among the multiple rollers, A conveying device equipped with a conveying mechanism.

[0063] Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above, and can be implemented in various ways without departing from the spirit of the invention. [Explanation of Symbols]

[0064] 10 frames 10a, 10b holes 20 Laura 20_1 Rotating Roller 20_2 Rotating roller 21 Roller shaft 21_1 Roller shaft 21a Groove 21a1 Bottom 22 Belt Guide 30 Roller shaft fixing device 31. Second Plate 31_1 Base 31a Fitting part 31a1 wall 31b, 31c, 31d, 31e holes 31A, 31B end face 32 Shaft holder 32_1 Base 32a hole 32b Elastic member 32c hole 32c1 1st hole wall 33 Plate 1 33_1 Base 33a, 33b holes 33b1 2nd hole wall 34 Fastening members 34a Nut 35 Fastening members 40 Cover 41 Fastening members 50 belts 100 Conveying device

Claims

1. A shaft holder is fixed to the frame while holding the roller shaft inserted into the hole, and has a first hole wall that forms a hole through which a roller shaft protruding from the roller and penetrating the frame is inserted, A first plate is fixed to the shaft holder with the roller shaft inserted, and is located on the opposite side of the shaft holder from the frame side, and has a second hole wall that forms a hole through which the roller shaft, which penetrates the shaft holder, is inserted. A plurality of elastic members are provided on the shaft holder, arranged apart from each other in the circumferential direction of the roller shaft so as to surround the first hole wall, and extending from the periphery of the first hole wall toward the second hole wall, Equipped with, The second hole wall presses the surfaces of each of the plurality of elastic members opposite to the roller shaft side toward the axial center of the roller shaft, in a roller shaft fixing device.

2. The roller shaft fixing device according to claim 1, further comprising a second plate having a fitting portion that fits into a groove formed on the outer circumferential surface of the roller shaft, the second plate being fixed to the frame with the wall surface forming the fitting portion fitted into the groove.

3. The roller shaft fixing device according to claim 2, wherein the shaft holder is gripped by the first plate and the second plate by a fastening member inserted from the first plate toward the frame.

4. The roller shaft fixing device according to claim 1, wherein the outer circumferential surface of the roller shaft and the wall of the second hole are polygonal.

5. The roller shaft fixing device according to claim 1, wherein the outer surface of the roller shaft and the wall of the first hole are polygonal.

6. A roller shaft fixing device according to any one of claims 1 to 5, A set of the aforementioned frames, Multiple rollers, A belt connecting adjacent rollers among the multiple rollers, A conveying device equipped with the following features.

Images